Football helmet piece



FIG. 1 is a front isometric view of the football helmet piece, which embodies my design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is an opposite side view;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a front isometric view thereof.

The broken lines showing a chain in FIG. 8 represent environment and form no part of the claimed design. 

CLAIM The ornamental design for a football helmet piece, as shown and described. 